钨酸锂铕荧光粉封装性能的研究  

Study on Package Performance of LiEuW_2O_8 Phosphor

作　　者：谢晔[1] 王海波[2] 张瑞西[2] 林海凤[1] 

机构地区：[1]南京工业大学材料科学与工程学院,南京210009 [2]南京工业大学电光源材料科学研究所,南京210015

出　　处：《中国照明电器》2009年第9期6-8,共3页China Light & Lighting

基　　金：江苏省科技创新与成果转化专项(BA2008049)

摘　　要：文章介绍了获得白光LED的几种主要方法,并研究了钨酸锂铕(LiEuW2O8)与YAG:Ce3+的不同配比组合封装对白光LED的光效、色温、显色指数等的影响。结果显示,随着LiEuW2O8含量从60%增至90%,显色指数升高到86,但是光效下降了近20 lm/W,色温也大幅升高至15 000K。分析原因,作者认为这主要是由于荧光粉的发光效率偏低造成的。Some currently available methods to achieve white LED are introduced in the paper. A different mixture ratio of LiEuW2 O8 and YAG phosphor have different effects on white LED＇ s luminous efficacy, color temperature, and color rendering index. The results show that the color rendering index rose to 86 with the content of LiEuWzOs rose from 60% to 90% . However, in the same time, luminous efficacy decreased by 20 lm/W, and color temperature increased to 15 000K. After the analysis, authors believe that this is primarily caused by the low luminous efficiency of phosphors .

关 键 词：LiEuW2O8 白光LED 红色荧光粉 YAG:Ce3+ 

分 类 号：TN104.3[电子电信—物理电子学]